| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "BootAction.h" |
| |
| #define LOG_TAG "BootAction" |
| |
| #include <android-base/strings.h> |
| #include <cpu-features.h> |
| #include <dlfcn.h> |
| #include <pio/peripheral_manager_client.h> |
| #include <utils/Log.h> |
| |
| using android::base::Split; |
| using android::base::Join; |
| using android::base::StartsWith; |
| using android::base::EndsWith; |
| |
| namespace android { |
| |
| BootAction::~BootAction() { |
| if (mLibHandle != nullptr) { |
| dlclose(mLibHandle); |
| } |
| } |
| |
| bool BootAction::init(const std::string& libraryPath, const std::string& config) { |
| APeripheralManagerClient* client = nullptr; |
| ALOGD("Connecting to peripheralmanager"); |
| // Wait for peripheral manager to come up. |
| while (client == nullptr) { |
| client = APeripheralManagerClient_new(); |
| if (client == nullptr) { |
| ALOGV("peripheralmanager is not up, sleeping before we check again."); |
| usleep(250000); |
| } |
| } |
| ALOGD("Peripheralmanager is up."); |
| APeripheralManagerClient_delete(client); |
| |
| std::string path_to_lib = libraryPath; |
| if (!parseConfig(config, &path_to_lib)) { |
| return false; |
| } |
| |
| ALOGI("Loading boot action %s", path_to_lib.c_str()); |
| mLibHandle = dlopen(path_to_lib.c_str(), RTLD_NOW); |
| if (mLibHandle == nullptr) { |
| ALOGE("Unable to load library at %s :: %s", |
| path_to_lib.c_str(), dlerror()); |
| return false; |
| } |
| |
| void* loaded = nullptr; |
| if (!loadSymbol("boot_action_init", &loaded) || loaded == nullptr) { |
| return false; |
| } |
| mLibInit = reinterpret_cast<libInit>(loaded); |
| |
| loaded = nullptr; |
| if (!loadSymbol("boot_action_shutdown", &loaded) || loaded == nullptr) { |
| return false; |
| } |
| mLibShutdown = reinterpret_cast<libShutdown>(loaded); |
| |
| // StartPart is considered optional, if it isn't exported by the library |
| // we will still call init and shutdown. |
| loaded = nullptr; |
| if (!loadSymbol("boot_action_start_part", &loaded) || loaded == nullptr) { |
| ALOGI("No boot_action_start_part found, action will not be told when " |
| "Animation parts change."); |
| } else { |
| mLibStartPart = reinterpret_cast<libStartPart>(loaded); |
| } |
| |
| ALOGD("Entering boot_action_init"); |
| bool result = mLibInit(); |
| ALOGD("Returned from boot_action_init"); |
| return result; |
| } |
| |
| void BootAction::startPart(int partNumber, int playNumber) { |
| if (mLibStartPart == nullptr) return; |
| |
| ALOGD("Entering boot_action_start_part"); |
| mLibStartPart(partNumber, playNumber); |
| ALOGD("Returned from boot_action_start_part"); |
| } |
| |
| void BootAction::shutdown() { |
| ALOGD("Entering boot_action_shutdown"); |
| mLibShutdown(); |
| ALOGD("Returned from boot_action_shutdown"); |
| } |
| |
| bool BootAction::loadSymbol(const char* symbol, void** loaded) { |
| *loaded = dlsym(mLibHandle, symbol); |
| if (loaded == nullptr) { |
| ALOGE("Unable to load symbol : %s :: %s", symbol, dlerror()); |
| return false; |
| } |
| return true; |
| } |
| |
| |
| bool BootAction::parseConfig(const std::string& config, std::string* path) { |
| auto lines = Split(config, "\n"); |
| |
| if (lines.size() < 1) { |
| ALOGE("Config format invalid, expected one line, found %d", |
| lines.size()); |
| return false; |
| } |
| |
| size_t lineNumber = 0; |
| auto& line1 = lines.at(lineNumber); |
| while (StartsWith(line1, "#")) { |
| if (lines.size() < ++lineNumber) { |
| ALOGE("Config file contains no non-comment lines."); |
| return false; |
| } |
| line1 = lines.at(lineNumber); |
| } |
| |
| const std::string libraryNameToken("LIBRARY_NAME="); |
| if (!StartsWith(line1, libraryNameToken.c_str())) { |
| ALOGE("Invalid config format, expected second line to start with %s " |
| "Instead found: %s", libraryNameToken.c_str(), line1.c_str()); |
| return false; |
| } |
| |
| std::string libraryName = line1.substr(libraryNameToken.length()); |
| |
| *path += "/"; |
| *path += architectureDirectory(); |
| *path += "/"; |
| *path += libraryName; |
| |
| return true; |
| } |
| |
| const char* BootAction::architectureDirectory() { |
| switch(android_getCpuFamily()) { |
| case ANDROID_CPU_FAMILY_ARM: |
| return "arm"; |
| case ANDROID_CPU_FAMILY_X86: |
| return "x86"; |
| case ANDROID_CPU_FAMILY_MIPS: |
| return "mips"; |
| case ANDROID_CPU_FAMILY_ARM64: |
| return "arm64"; |
| case ANDROID_CPU_FAMILY_X86_64: |
| return "x86_64"; |
| case ANDROID_CPU_FAMILY_MIPS64: |
| return "mips64"; |
| default: |
| ALOGE("Unsupported cpu family: %d", android_getCpuFamily()); |
| return ""; |
| } |
| } |
| |
| } // namespace android |